Evaluation of Correlations for Natural Convection on the Behavior of a Wire-on-Tube Condenser

Abstract:

This paper outlines the evaluation of the influence of different empirical correlations to compute air-side heat transfer coefficient on the behavior of a wire-on-tube condenser by performing numerical simulations. A fully predictive simulation model based on first-principles equations and empirical correlations for heat transfer and friction factor is considered. Two-phase flow is modeled using homogeneous model and a void fraction correlation available in the literature is considered. Results show that for the correlations tested, different estimations of heat rate rejected to the environment can be obtained and hence, different thermal hydraulic behavior of the condenser can be obtained. This influence is critical, especially when the global numerical simulation of a domestic refrigerator is considered.

• Periodical: Advanced Materials Research (Volume 1016)
• Pages: 774-777
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1016.774
• Online since: August 2014
• Authors: José Antônio da Silva*, Matheus dos Santos Guzella, Cristiana Brasil Maia, Sérgio de Morais Hanriot, Luben Cabezas-Gómez
• Keywords: Finite Volume Method (FVM), Free Convection, Numerical Simulation, Wire-on-Tube Condensers

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